Evaluate
20\sqrt{5}\approx 44.72135955
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\sqrt{2000}
Add 1000 and 1000 to get 2000.
20\sqrt{5}
Factor 2000=20^{2}\times 5. Rewrite the square root of the product \sqrt{20^{2}\times 5} as the product of square roots \sqrt{20^{2}}\sqrt{5}. Take the square root of 20^{2}.
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